Zoo Med Excavator Cavern Kit Make a homier habitat for your desert and burrowing reptiles This kit includes everything you need to make caverns, tunnels, and shelters with the Excavator Clay Substrate Lay the groundwork for your reptile's new naturalistic habitat with 12 pounds of Excavator Substrate and a special mixing bag Then, use the installation booklet to get creative with the included tools: a 7 inch tunnel tube, 4 round balloons, balloon attachment assembly, and a 10 inch shovel Made in the USA